Signal System - Yamaha YBR 125 Service Manual

3.Blinker/turn signal lamp,indicator no work.
1.Bulb and socket
Check if the bulb and socket are conducted
2.Turn signal switch
Remove the branch-connector of handlebar switch
(left)from bundle conductor
Check if the switch between"Brown/white& Dark
brown"and"Brown
/
3.Voltage
Connect min. Multitester(DC20V) to the relay
on the blinker device.
Postitive guide wire of multitester→Brown guied
wire
Negative guide wire of multitester→Frame
ground
Turn the switch to "ON".
Check if the voltage of "Brown"guide wire at the
relay binding post of blinker device gets to 12V.
4.Blinker relay
Connect multitester(test frequencyDC20V)
to blinker relay
Guide wire→Brown/white terminal
guide wire→Body ground
Turn the main switch to "ON".
Turn the blinker to left or right,
Me sure the voltage of brown/white guide wire(12V).
a
Conduction
white &Dark green"is conducted.
Condutction
Meet mormal value
Meet normal value

Signal system

No conduction
Replace the bulb or the socket
Abnormal
The turn signal switch is failure,replace the
handlebar switch(left)
Out of normal value
There is poor layout from the main swotch to the relay
binding post of blinker device,the repair is needed.
Out of normal value
Replace the blinker relay
7-35
ELEC